Sure but there is a difference between balancing changes, bugs introduced with new content additions and core features like transfers and LFD system, while core systems can and should be developed along the way to improve the game it should never be done at the expense of content, this is where BW has done it wrong out of necessity due to launching a very incomplete game.
Like I said, transfers is something that should have been planned for as soon as they decided on a multi server structure and been developed along with the game. That is the most clear example.